Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
E05F13/00—Mechanisms operated by the movement or weight of a person or vehicle
E05F13/04—Mechanisms operated by the movement or weight of a person or vehicle by platforms lowered by the weight of the user
E—FIXED CONSTRUCTIONS
E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
E05F1/02—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights
E—FIXED CONSTRUCTIONS
E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
E05F1/02—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights
E05F1/04—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights for wings which lift during movement, operated by their own weight
E05F1/046—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights for wings which lift during movement, operated by their own weight with rectilinearly-inclined tracks for sliding wings